fmunmap

libclamav/fmap.c

@@ -24,16 +24,19 @@
 #include "clamav-config.h"
 #endif
 
+/* THIS IS FUCKED UP AND BREAKS MMAP
+#define _XOPEN_SOURCE 500
+*/
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <string.h>
-#include <sys/mman.h>
 #include <unistd.h>
+#include <sys/mman.h>
 
 #include "others.h"
 #include "cltypes.h"
 
-
 #define FM_MASK_SCORE 0x3fff
 #define FM_MASK_PAGED 0x4000
 #define FM_MASK_SEEN 0x8000
@@ -171,3 +174,9 @@ void *fmap_need(struct F_MAP *m, size_t at, size_t len) {
     return (void *)ret;
 }
 
+
+void fmunmap(struct F_MAP *m) {
+    void *p = (void *)m;
+    size_t len = m->pages * m->pgsz + m->hdrsz;
+    munmap(p, len);
+}

libclamav/fmap.h

@@ -18,8 +18,12 @@
  *  MA 02110-1301, USA.
  */
 
+#ifndef __FMAP_H
+#define __FMAP_H
 
 struct F_MAP;
 
 struct F_MAP *fmap(int fd, off_t offset, size_t len);
+void *fmunmap(struct F_MAP *m, size_t len);
 
+#endif